JP3378603B2 - Balance chair - Google Patents
Balance chairInfo
- Publication number
- JP3378603B2 JP3378603B2 JP03112493A JP3112493A JP3378603B2 JP 3378603 B2 JP3378603 B2 JP 3378603B2 JP 03112493 A JP03112493 A JP 03112493A JP 3112493 A JP3112493 A JP 3112493A JP 3378603 B2 JP3378603 B2 JP 3378603B2
- Authority
- JP
- Japan
- Prior art keywords
- link
- auxiliary
- sub
- connecting shaft
- parallel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 210000000245 forearm Anatomy 0.000 description 8
- 238000001356 surgical procedure Methods 0.000 description 3
- 125000002066 L-histidyl group Chemical group [H]N1C([H])=NC(C([H])([H])[C@](C(=O)[*])([H])N([H])[H])=C1[H] 0.000 description 2
- 210000004556 brain Anatomy 0.000 description 2
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
Landscapes
- Accommodation For Nursing Or Treatment Tables (AREA)
Description
【発明の詳細な説明】
【０００１】
【産業上の利用分野】この発明は手術用のバランスチェ
アーに関する。
【０００２】
【従来の技術及び発明が解決しようとする課題】脳外科
手術や心臓外科手術などは、非常に細かくて神経を使う
手術であると共に、手術時間も８〜９時間の長時間にな
るケースが多い。例えば、脳外科手術の場合は、手術顕
微鏡で患部を観察しながら行うものであり、ドクターは
メス等を持った腕を持ち上げたまま、何時間もその姿勢
を保つことを強いられる。このような長時間の手術は、
患者だけでなく、ドクターにとっても、肉体的且つ精神
的に負担をかけていた。また、このような医療に携わる
ドクターに限らず、腕を上げたまま作業をする者にとっ
ては、上記の如き苦労は共通してある。
【０００３】この発明はこのような観点に基づいて発明
されたものであり、腕を上げたまま作業を行う者の肉体
的負担を少なくすることができるバランスチェアーを提
供するものである。
【０００４】
【課題を解決するための手段】この発明に係るバランス
チェアーは、上記の目的を達成するために、椅子本体に
設けた水平軸に回転自在な取付部を設けると共に、該取
付部に長手中心軸で回転自在な第１リンクの途中部分を
回動支点で回動自在に支持し、且つ該第１リンクの上端
の連結軸に上腕支持用の第２リンクの途中部分を軸支
し、該第２リンクの先端の連結軸に前腕支持用の第３リ
ンクの端部を軸支し、前記第１リンクと第２リンクとの
連結軸にクランク部材を軸支すると共に、第１リンクの
下端に第１補助リンク及び第２補助リンクを軸支し、そ
して、第１補助リンクの他端と前記第２リンクの他端と
を第１リンクと平行な第１サブリンクで、また第２補助
リンクの他端と前記クランク部材の一端とを第２リンク
と平行な第２サブリンクで各々連結し、第３リンクの一
部とクランク部材の他端と第２リンクと平行な第３サブ
リンクで連結し、そして、第１補助リンクと第１サブリ
ンクの連結軸に第１カウンタウェイトを、第２補助リン
クと第２サブリンクの連結軸に第２カウンタウェイト
を、各々設けたものである。
【０００５】
【作用】第１リンクにて作業者の上半身が支えられ、第
２リンクにて上腕が支えられ、第３リンクにて前腕が支
えられるため、作業者は腕等の重さを自分で支える必要
がない。従って、長時間の手術でも肉体的負担が小さ
い。
【０００６】
【実施例】以下、この発明の一実施例を図面に基づいて
説明する。１が椅子本体であり、この椅子本体１は、ベ
ース部２、シリンダ部３、操作レバー４、着座部５、背
もたれ部６、とから構成されている。従って、操作レバ
ー４を動かすことにより、着座部５を上下動させること
ができる。
【０００７】椅子本体１の背もたれ部６には支持アーム
７が設けられており、この支持アーム７の下部に設定さ
れた水平軸α1 に取付部８が回転自在に設けられてい
る。この取付部８には回動支点Ｘを中心に回動自在な筒
体９が設けられており、この筒体９に長手中心軸α2 を
中心に回転自在な第１リンク１０が設けてある。
【０００８】この第１リンク１０の上端の連結軸α3 に
は第２リンク１１の途中部分が軸支されている。この第
２リンク１１はドクターＤの上腕Ｍ1 を支えるために下
方に湾曲状の受部１１ａが一対形成されている。そし
て、この第２リンク１１の先端の連結軸α4 にドクター
Ｄの前腕Ｍ2 を支えるための第３リンク１２が軸支して
ある。この第３リンク１２を軸支している連結軸α4 に
は第３リンク１２と一体的に回動する回動部材１３が設
けられており、この回動部材１３には２つの連結軸
α5 、α6 が設定されている。そして、この第３リンク
１２にも前腕Ｍ2 を支えるための受部１２ａが設けてあ
る。
【０００９】そして、前記第１リンク１０と第２リンク
１１との連結軸α3 には、３つの連結軸α7 、α8 、α
9 が設定されたクランク部材１７が軸支されている。ま
た、第１リンク１０の下端の連結軸α10には第１補助リ
ンク１４と第２補助リンク１５とが軸支されている。そ
して、この第１補助リンク１４の他端の連結軸α11と前
記第２リンク１１の他端の連結軸α12とを、第１リンク
１０と平行な第１サブリンク１６で連結し、且つ、第２
補助リンク１５の他端の連結軸α13と前記クランク部材
１７の一端の連結軸α7 とを第２リンク１１と平行な第
２サブリンク１８で、各々連結している。更に、クラン
ク部材１７の他の連結軸α8 、α9 と回動部材１３の連
結軸α5 、α6 同士を、互いに第２リンク１１に平行な
第３サブリンク１９ａ、１９ｂにて連結している。
【００１０】そして、第１補助リンク１４と第１サブリ
ンク１６の連結軸α11に第１カウンタウェイトＷ1 が設
けられ、且つ第２補助リンク１５と第２サブリンク１８
の連結軸α13に第２カウンタウェイトＷ2 が設けられて
いる。
【００１１】以上のように、この実施例のものは、連結
軸α10→連結軸α3 →連結軸α12→連結軸α11にて、メ
イン平行リンクＡが形成され、連結軸α10→連結軸α3
→連結軸α7 →連結軸α13にて第１のサブ平行リンクＢ
1 が形成され、そして連結軸α8 →連結軸α5 →連結軸
α6 →連結軸α9 にて第２のサブ平行リンクＢ2 が形成
される。
【００１２】前腕支持動作：前腕Ｍ2 の重さは、第３リ
ンク１２に加わるが、その重さは２本の第３サブリンク
１９ａ、１９ｂを含む平行リンクＢ2 、クランク部材１
７、平行リンクＢ1を介して第２カウンタウェイトＷ2
にて相殺されるため、ドクターＤは自身の前腕Ｍ2 の重
さが負担にならない。
【００１３】上腕支持動作：上腕Ｍ1 （前記前腕Ｍ2 の
重さも含む）は、第２リンク１１に加わるが、その重さ
は、第１リンク１０及び第１サブリンク１６を含むメイ
ン平行リンクＡを介して、第１カウンタウェイトＷ1 に
て相殺されるため、自身の上腕Ｍ1 の重さを感じない。
【００１４】上半身支持動作：例えば、ドクターが前か
がみ状態になったような場合には、その前側への移動に
より、メイン平行リンクＡ及び第１サブ平行リンクＢ1
が前後に変形するため、第１カウンタウェイトＷ1 及び
第２カウンタウェイトＷ2 の両方の重さにより上半身の
重さがある程度相殺されることとなる。従って、前かが
み状態の姿勢を長時間強いられても楽である。
【００１５】また、上半身を左右に傾ける動作は、第１
リンク１０等が水平軸α1 を中心に回動自在であること
から可能となる。尚、この場合も第１カウンタウェイト
Ｗ1及び第２カウンタウェイトＷ2 の両方の重さにより
上半身の重さがある程度相殺されるため楽である。
【００１６】また、上半身を左右に回転させて傾ける動
作は、第１リンク１０等が長手中心軸α2 を中心に回転
自在であることから可能となる。
【００１７】以上説明したように、この発明のバランス
チェアーは、座っている状態のドクターＤがどのような
姿勢をとっても追従でき、且つ腕及び上半身の重さを支
持することができるので、長時間の手術を行っても肉体
的負担が小さい。尚、必要により前記「連結軸」に電磁
クラッチを設けても良い。
【００１８】この発明は、上記のようなドクターＤに限
らず、例えば、工場内の製造ラインにおいて腕を上げた
まま作業を行う人、腕を上げたままキーボード操作等を
行う人、病気等によって腕の筋力が低下した人などにも
利用される。
【００１９】
【発明の効果】この発明に係るバランスチェアーによれ
ば、作業者の上半身及び腕の各部分の重さを支えること
ができるため、長時間の作業でも肉体的負担が小さい。
また、着座状態のままどのような姿勢をとっても追従で
きるため、手術の支障にはならない。また、モータ等の
駆動力を用いず、単にカウンタウェイトによるバランス
式なので故障がなく安全である。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surgical balance chair. 2. Description of the Related Art Brain surgery and heart surgery are very fine and nervous operations and require a long operation time of 8 to 9 hours. There are many. For example, brain surgery is performed while observing the affected part with a surgical microscope, and the doctor is forced to keep his posture for many hours while lifting his arm with a scalpel or the like. Such a long operation,
Not only the patient but also the doctor was physically and mentally burdened. Further, not only doctors engaged in such medical treatment but also those who work with their arms raised have the above-mentioned difficulties in common. [0003] The present invention has been made based on such a viewpoint, and provides a balance chair which can reduce the physical burden of a person who works with his arms raised. [0004] In order to achieve the above object, a balance chair according to the present invention is provided with a rotatable mounting portion on a horizontal shaft provided on a chair body, and the mounting portion has a rotatable mounting portion. An intermediate portion of the first link, which is rotatable about the longitudinal center axis, is rotatably supported at a pivot point, and an intermediate portion of the second link for supporting the upper arm is pivotally supported on the connecting shaft at the upper end of the first link. An end of a third link for supporting a forearm is pivotally supported on a connecting shaft at a distal end of the second link, and a crank member is supported on a connecting shaft between the first link and the second link; A first auxiliary link and a second auxiliary link are pivotally supported at the lower end of the first link, and the other end of the first auxiliary link and the other end of the second link are connected by a first sub-link parallel to the first link. 2 Make the other end of the auxiliary link and one end of the crank member parallel to the second link. And a second sub-link, a part of the third link, the other end of the crank member and a third sub-link parallel to the second link, and a connection between the first auxiliary link and the first sub-link. The first counterweight is provided on the shaft, and the second counterweight is provided on the connecting shaft of the second auxiliary link and the second sub-link. The first link supports the upper body of the worker, the second link supports the upper arm, and the third link supports the forearm. There is no need to support it. Therefore, a physical burden is small even in a long operation. An embodiment of the present invention will be described below with reference to the drawings. Reference numeral 1 denotes a chair body, and the chair body 1 includes a base portion 2, a cylinder portion 3, an operation lever 4, a seating portion 5, and a backrest portion 6. Therefore, by moving the operation lever 4, the seat 5 can be moved up and down. [0007] A support arm 7 is provided on the backrest 6 of the chair body 1, and a mounting portion 8 is rotatably provided on a horizontal axis α 1 set below the support arm 7. This is the mounting portion 8 is rotatable cylindrical body 9 is provided around the pivot point X, there first link 10 freely rotate about the longitudinal central axis alpha 2 is provided in the cylindrical body 9 . An intermediate portion of the second link 11 is supported on the connecting shaft α 3 at the upper end of the first link 10. The second link 11 is curved receiving portion 11a downwardly to support the upper arm M 1 doctor D is formed as a pair. The third link 12 for supporting the forearm M 2 doctor D to the connecting shaft alpha 4 of the tip of the second link 11 are rotatably supported. The connecting shaft α 4 that supports the third link 12 is provided with a turning member 13 that turns integrally with the third link 12. The turning member 13 has two connecting shafts α. 5, α 6 has been set. The receiving portion 12a for supporting the forearm M 2 in the third link 12 is provided. The connecting axis α 3 between the first link 10 and the second link 11 has three connecting axes α 7 , α 8 , α
A crank member 17 set at 9 is pivotally supported. Further, the lower end connecting shaft alpha 10 of the first link 10 and the first auxiliary link 14 and the second auxiliary link 15 is pivotally supported. The other end of the connecting shaft alpha 12 of the connection shaft alpha 11 and the second link 11 at the other end of the first auxiliary link 14, connected by a first sub-link 16 parallel to the first link 10, and , Second
The a connecting shaft alpha 13 at the other end of the auxiliary link 15 and the connecting shaft alpha 7 at one end of the crank member 17 in the second link 11 and parallel to the second sub-link 18 are respectively connected. Further, the other connecting shafts α 8 and α 9 of the crank member 17 and the connecting shafts α 5 and α 6 of the rotating member 13 are connected to each other by third sub-links 19 a and 19 b parallel to the second link 11. ing. [0010] Then, the first counterweight W 1 is provided on the connection shaft alpha 11 of the first auxiliary link 14 and the first sub-link 16, and the second auxiliary link 15 and the second sub-link 18
The connecting shaft alpha 13 is the second counterweight W 2 are provided for. As described above, in this embodiment, the main parallel link A is formed by the connecting shaft α 10 → the connecting shaft α 3 → the connecting shaft α 12 → the connecting shaft α 11 , and the connecting shaft α 10 → Connection axis α 3
→ Connection axis α 7 → First sub parallel link B at connection axis α 13
1 is formed, and at the connecting shaft alpha 8 → connection shaft alpha 5 → connection shaft alpha 6 → connection shaft alpha 9 second sub parallel link B 2 is formed. [0012] forearm support Operation: Weight of the forearm M 2 is applied to the third link 12, the parallel link B 2 its weight, including two third sub-link 19a, a 19b, a crank member 1
7. The second counter weight W 2 via the parallel link B 1
Because it is offset by, Dr. D is the weight of its own forearm M 2 does not become a burden. Upper arm support operation: The upper arm M 1 (including the weight of the forearm M 2 ) is added to the second link 11, but the weight is the main parallel link including the first link 10 and the first sub link 16. through the a, because it is offset by the first counterweight W 1, I do not feel the weight of its own upper arm M 1. Upper body supporting operation: For example, when the doctor is bent forward, the main parallel link A and the first sub parallel link B 1 are moved by moving the doctor to the front side.
Is deformed back and forth, so that the weight of the upper body is offset to some extent by the weights of both the first counter weight W 1 and the second counter weight W 2 . Therefore, it is easy even if the user is forced to lean forward for a long time. The operation of tilting the upper body to the left and right is the first operation.
It becomes possible because the link 10 or the like is rotatable about a horizontal axis alpha 1. In this case, too, the weight of the upper body is offset to some extent by the weights of the first counter weight W 1 and the second counter weight W 2 , so that it is easy. In addition, the operation of tilting the upper body by rotating it to the left and right is possible because the first link 10 and the like are rotatable about the longitudinal center axis α 2 . As described above, the balance chair according to the present invention can follow the doctor D in a sitting state in any posture and can support the weight of the arm and the upper body, so that it can be used for a long time. The physical burden is small even if the operation is performed. If necessary, an electromagnetic clutch may be provided on the “connection shaft”. The present invention is not limited to the above-mentioned doctor D. For example, in a production line in a factory, a person who works with his / her arm raised, a person who performs a keyboard operation or the like with his / her arm raised, a disease, etc. It is also used by people with weak muscles. According to the balance chair of the present invention, since the weight of each part of the upper body and the arms of the worker can be supported, the physical burden is small even for long-time work.
In addition, since it can follow any posture in the seated state, it does not hinder the operation. Further, since the balance type is simply based on the counter weight without using the driving force of a motor or the like, there is no failure and the safety is achieved.
【図面の簡単な説明】
【図１】この発明の一実施例に係るバランスチェアーを
示す側面図である。
【符号の説明】
８ 取付部
１０ 第１リンク
１１ 第２リンク
１２ 第３リンク
１４ 第１補助リンク
１５ 第２補助リンク
１６ 第１サブリンク
１７ クランク部材
１８ 第２サブリンク
１９ａ、１９ｂ 第３サブリンクBRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view showing a balance chair according to one embodiment of the present invention. [Description of Signs] 8 Mounting portion 10 First link 11 Second link 12 Third link 14 First auxiliary link 15 Second auxiliary link 16 First sub link 17 Crank member 18 Second sub link 19a, 19b Third sub link
Claims (1)
付部を設けると共に、該取付部に長手中心軸で回転自在
な第１リンクの途中部分を回動支点で回動自在に支持
し、且つ該第１リンクの上端の連結軸に上腕支持用の第
２リンクの途中部分を軸支し、該第２リンクの先端の連
結軸に前腕支持用の第３リンクの端部を軸支し、 前記第１リンクと第２リンクとの連結軸にクランク部材
を軸支すると共に、第１リンクの下端に第１補助リンク
及び第２補助リンクを軸支し、 そして、第１補助リンクの他端と前記第２リンクの他端
とを第１リンクと平行な第１サブリンクで、また第２補
助リンクの他端と前記クランク部材の一端とを第２リン
クと平行な第２サブリンクで各々連結し、第３リンクの
一部とクランク部材の他端と第２リンクと平行な第３サ
ブリンクで連結し、 そして、第１補助リンクと第１サブリンクの連結軸に第
１カウンタウェイトを、第２補助リンクと第２サブリン
クの連結軸に第２カウンタウェイトを、各々設けたこと
を特徴とするバランスチェアー。(1) A horizontal shaft provided on the chair body is provided with a rotatable mounting portion, and the mounting portion is rotated around a middle portion of the first link rotatable about a longitudinal center axis. The first link is rotatably supported at a pivot point, and the connecting shaft at the upper end of the first link is rotatably supported at an intermediate portion of the second link for supporting the upper arm. An end of the third link is pivotally supported, a crank member is pivotally supported on a connecting shaft between the first link and the second link, and a first auxiliary link and a second auxiliary link are pivotally supported at a lower end of the first link. And the other end of the first auxiliary link and the other end of the second link are a first sub-link parallel to the first link, and the other end of the second auxiliary link and one end of the crank member are Two links are connected by a second sub-link parallel to the two links, and a part of the third link and the other end of the crank member A third counter link parallel to the second link, and a first counterweight on the connecting axis of the first auxiliary link and the first sublink, and a second counterweight on the connecting axis of the second auxiliary link and the second sublink. A balance chair characterized by having a counter weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03112493A JP3378603B2 (en) | 1993-01-28 | 1993-01-28 | Balance chair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03112493A JP3378603B2 (en) | 1993-01-28 | 1993-01-28 | Balance chair |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06218013A JPH06218013A (en) | 1994-08-09 |
| JP3378603B2 true JP3378603B2 (en) | 2003-02-17 |
Family
ID=12322679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP03112493A Expired - Fee Related JP3378603B2 (en) | 1993-01-28 | 1993-01-28 | Balance chair |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3378603B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20240007087A (en) * | 2022-07-07 | 2024-01-16 | 주식회사 바디프랜드 | Massage apparatus having rotatable arm massage unit |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6923505B2 (en) * | 2003-07-01 | 2005-08-02 | The Regents Of The University Of California | Ergonomically neutral arm support system |
| KR101238029B1 (en) * | 2011-03-14 | 2013-02-27 | 연세대학교 산학협력단 | Arm rest for medical |
-
1993
- 1993-01-28 JP JP03112493A patent/JP3378603B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20240007087A (en) * | 2022-07-07 | 2024-01-16 | 주식회사 바디프랜드 | Massage apparatus having rotatable arm massage unit |
| KR102646795B1 (en) | 2022-07-07 | 2024-03-13 | 주식회사 바디프랜드 | Massage apparatus having rotatable arm massage unit |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06218013A (en) | 1994-08-09 |
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